RT Book, Section A1 Ural, Serdar H. A2 Silverman, Robert K. SR Print(0) ID 1139758435 T1 Pregestational and Gestational Diabetes T2 Obesity Medicine: Management of Obesity in Women's Health Care YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9780071843515 LK obgyn.mhmedical.com/content.aspx?aid=1139758435 RD 2024/09/12 AB Pregestational diabetes, based on literature, appears to be present in approximately 1% of all pregnancies.1 Type 1 diabetes mellitus tends to occur early in human life and appears to be associated with an autoimmune disorder that alleviates pancreatic β cells. This generally leads to a requirement for insulin replacement. Type 2 pregestational diabetes mellitus is associated with obesity, insulin deficiency, insulin resistance, and development of certain complications, such as neurologic, renal, and vascular issues. Type 2 diabetes has increased significantly in number due to the obesity epidemic in the United States.2 Of diabetic cases in pregnancy, 90% are related to gestational diabetes mellitus. Over 50% of such patients will eventually develop type 2 pregestational diabetes. Obesity, along with diabetes, has many negative consequences during pregnancy, to the mother, to the fetus, to the newborn, or to all.